Spreading apparatus



July 25, A. DEAN SPRE'ADING APPARATUS l Filed April 14, 1930 2 Sheets-Sheet l .mii

2! wif- A TTORNY July 25, A DEAN l SPREADING APPARATUS Filed April 14, 1950 2 Sheets-Sheetl 2 INVENTOR.

BY @be A TTORNE Y.

Patented July 2S, 1933 UNTED 'STATES 1Nc.,roE UPPER LAEBY, PENNSYLVANIA., 'A 'conroaArIoN oE PENNSYLVANIAIK,

sEREAnING AEEARATUS Appucaun inea 1117x1114, i930. serial 'No.444g195`.

The present invention relates to road building machinery and more particularly to a mechanical spreader for distributing stone chips, gravel, sand or any other loose material over a surface while in motion.

Some of the objects` of the present .inven-v tion are to yprovide 'an improvement upon the type of spreading apparatus which forms the subject matter of Patient No. 1,715,325; to provide a spreader wherein provision is made for uniformly distributing material as re-v ceived from a continuously unregulated source ofsupply; to provide an improved hopper construction for spreaders; to provide a hopper with means for varying the quantity'of material delivered to the distributing 'means'while maintaining a constant feeding'speed; to provide a control for the hoppers of spreading machin'eswherein the size of the discharge outletcan be varied at will and at the same time maintaining alcoaxial relation between the-outlet andthe distributing disc; to provide a receivingand dis# charging hopper for spreaders whereinjit is impossible for the material to overflow about the top of the hopper incase the outlet to the distributing means becomes clogged; to provide a flexible control for spreaders'so that Vall kinds of materials varying in size, weight and consistency can be eliiciently handled in the sam-e spreader; and to provide other improve-v ments as will hereinafter appear.-

In the accompanying drawings Fig. 1 represents 'a front elevation ofl a spreading vehicle embodying one -form of the`present in vention; Fig. 2 represents a plan of the same; f

10 carrying arotatable spreader disc 11, and a hopper 12 for delivering material to the disc 11 for spreading purposes.

The body 10, as here shown, consistsof an angle iron frame forming a square opentop 13 with depending supporting "arms '14v attached to a bearingy housingv l15 Ain :which is v journalled the shaft 16 upon the ends of which are the vehicle wheels 17 Thus the top 13 all sidesfor the passage; of thef'outwardly thrown material. 'The rear ofthe body frame is provided 'with' an extension 20 carrying two bars 21- Awhich are mjountedfor sliding movement in the eXtension'2O for adjustment towards and awayfrom eachother. Suitable'y bolts 22 serve `to anchor theilbars 21 in any se-k lected operative position. @Each of the bars deLLAN I. DEAN, or YEADON, PENNSYLVANIA, "AssIGNoE To Goor. EoAns JO`NIPANY,V`

is elevated abovethewheels 17 so that eective 'discharge' openings y18 are provided iat' 55' y 21'1nounts a coupling 23 which'` are of bifuri catedvform to interfit with a cooperatingpart upon thef chassis Iof a truck .or othervehicle to which the bodyV is attached forgfnse. These vcouplings 23 are provided kwith-V a number ofr holes 211 *for vertical adjustment relation to the bars 21, While the bars 21haveh0les 25 for lateral?. adjustment of the couplings 23.*- Bolts 26 serveto anchor the couplings 23 in any adjusted position.v .The oppositev side of the l body frame is preferably provided with hooks f 27 to which chains can be connected toftransn portthespreaderupon the rear of afrmotorV truck.'

. Thev disc llvserves to throw the material outwardly and forthat purpose is mounted upon a shaft 28 Vwhich -is Vjournalled vinan .'upsta'nding bearing 3() forming apart of the vhousing 15 and receives motion by way of a bevel gear Bland bevelv gear', 32, the-former being keyed to the shaft 28 and the latter to the shaft 16. Thus in operative positionthe disc 11 Vrotates ina substantially horizontal v plane and distributes the material in all directions 'outwardly therefrom. Distributing varies 33 rise verticallyand radially fromthe upper orA material 'receiving lface ofv the disc 11 and preferably these varies taper upwardly to form an upstanding hub 34. A rounded cap or head 35 is attached to the end of the shaft 2S for guiding the material to the vanes.

VFor receiving the material'from a dump- `wardly converging to a discharge mouth 37.`

.95 ,Y ing truck or other source of supply and de-v y able to handle efficiently, though in this connection it is desirable to have a mouth which can bejvaried as to size linA order to meet every condition of use as well as all classes of inaterial.

For the purpose of so varying the discharge or feeding mouth 37, a plurality of shutter leaves 41, preferably four, are pivotedA respectively to pivot pins 42 attached to and projecting from the bottom of the .hopper 12; The pins42 vare so located as to form the corners ofavsquare which is co` axially ldisposed with respect to the mouth'37.

. The size, shape andv pivotalarrangement of the'shutter leaves 417is such that one: pair of leaves swings ina plane with the opposed or meeting edges 42 always parallel to each other, while the other pair swings in a parallel closely'adjacent plane with rthe opposed or meeting edges 44 lalways parallel to eachV other; The two sets of edges 43 and 44 therefore always form'tlie sides of' a square the dimensionsfof `which vary from zeroto the size of the kmouth 37 accordingtothe set positions ofthe leaves 41. Movement is simultaneously transmitted tothe leaves 41 by pivoted links 45 connecting all of the leaves in pairs, While a thrust link V46 serves as a commonmotion transmitting means from a lever 47 pivoted at 48 tothe hopper 13. A. The free end of the lever 47 is brought to a. conveniently accessible location at one side of the hopper 12. Y i

In operation the spreadingV vehicle is attachedto the dumping end of a truck or other vehicle b v means of the couplings 23 which are so adjustedand fixed in position as to locate one side of the hopper 12 in such close 'proximity to the truckV as will ensure all ma-V terial .being discharged thereinto' in all discharging positions of the tiuck body. The

control lever 47 is'now moved to the position to cause the shutter leaves 41 to assume the position necessary to give the required orselected size of control' opening and the machine is then ready to operate. The dump bodyiof the material truck is'now elevated to Y f tol cause the material to discharge by gravity the 'size of through the passage provided by openin g the tail gate of the truck and into the hopper 12. lith the truck in motion pushing the wheeled body before. it, the material liowing through the shutter opening falls upon the rotating disc 11 and is thrown olf upon the roadway in an even and uniform manner. The regulation of the flow from the hopper 12 to the disc 11 takes place by varying the opening of -theshutter leaves 41 and as these operate simultaneously and advance and recede, While maintaining the same relation one to the other, the opening is always co-axially disposed with respect to the shaft upon which the disc 11 is mounted. This construction makes it unnecessary to use the gatein the tail board of the truck for controlling the flow of-material.

' Having thus described claim: Y Y

1.-A'spreader apparatus for roadways comprising the combination of a wheeled body, a spreader rotatably mounted on said body, .a hopper carried by said body having an outlet located toi discharge material upon said spreader, .a plurality Vof 'shutters arranged in pairs respectively in parallel planes,means for mounting each pair o f shutters to maintain two opposed edges in parallel relation in all positions of said shutters, theseV opposed edges of all of said shuttersforming an opening. in register with said outlet, and means to move' said shutters in synchronism to eitherincrea'se or decrease the size of said opening. Y 2. A spreader apparatus comprising thejcombination of awheeled my invention, I

body, a hopperV carried by said body having an o'utletlocated to discharge materialupon for roadways body, a spreader rotatably mounted on said said spreader,V a `plurality of shutters' ar:

ranged inpairs respectively .in parallel planes, mea-ns for mounting each pair of shutters to maintain two opposed edges in parallelV relation in all positionsof saidshutters,thes`e opposed edges of all of said shutters forming an opening in register with said outlet, and means including interconnecting links for maintaining said opening inY coaxial relationto saiddischarge outlet in all positions of said shutters, and means for movingsaid shutters to form an opening of predetermined size. v f- ALLAN I. DEAN.

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